People often say, including those with extensive knowledge in biology, that a certain species of animal will evolve in one way or another:
From changing environments.
Mutations.
Possibly even genetic engineering from human animals.
My question lies in the fact that, aside from the latter option, why haven't any differences in animals'(except humans) markup, morphology, intelligence, DNA, behavior, or any habits changed over thousands or (possibly millions) of years?
A cockroach has had the same behavior it has today more than 10 million years ago, and there have been no advancements in the species in the slightest bit.
It makes you question evolution, because why don't other animals (like cockroaches) have any changes over 10+ million years, yet humans, like me and you somewhat, have, in a relative period of time similar to the linked geological period above, evolved from spear tossing hominids into someone brilliant enough to even ponder this question.
If modern humans are the result of mutations in genes, why has no one species over the course of hundreds of millions of years been fit enough, or advanced mentally as we have, or even in any slightest bit?
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